262392

Appears in sequences

• Numbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.at n=17A071639
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and positive determinant.at n=12A211148